<template>
  <!-- 底部 -->
  <div class="my-footer">
    <!-- 全选 -->
    <div class="custom-control custom-checkbox">
      <input
        type="checkbox"
        class="custom-control-input"
        id="footerCheck"
        v-model="change"
      />
      <label class="custom-control-label" for="footerCheck">全选</label>
    </div>
    <!-- 合计 -->
    <div>
      <span>合计:</span>
      <span class="price">¥ {{ getPrice }}</span>
    </div>
    <!-- 按钮 -->
    <button type="button" class="footer-btn btn btn-primary">结算 ( {{ getCount }} )</button>
  </div>
</template>

<script>
export default {
  props: ["list"],
  data() {
    return {
      price: 0,
    };
  },
  computed: {
    change: {
      get() {
        return this.list.every((item) => item.goods_state);
      },
      set(v) {
        this.$emit("change", v);
      },
    },

    getPrice() {
      return this.list
        .filter((item) => item.goods_state)
        .reduce((pre, item) => pre + item.goods_price * item.goods_count, 0);
    },
    getCount() {
      return this.list
        .filter((item) => item.goods_state)
        .reduce((pre, item) => pre +  item.goods_count, 0);
    }
  },
  methods: {
    edit() {
      // console.log(this.isShow);
      this.$emit("changFn", this.isShow);
    },
  },
};
</script>

<style lang="less" scoped>
.my-footer {
  position: fixed;
  z-index: 2;
  bottom: 0;
  width: 100%;
  height: 50px;
  border-top: 1px solid #ccc;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 10px;
  background: #fff;

  .price {
    color: red;
    font-weight: bold;
    font-size: 15px;
  }
  .footer-btn {
    min-width: 80px;
    height: 30px;
    line-height: 30px;
    border-radius: 25px;
    padding: 0;
  }
}
</style>